Dear Sir Madam, Type:Mountain Bike Wheel Size:20" 24" 26" 27.5" 29" Frame Material:Steel Alloy Carbon Fork Material:Steel Alloy Carbon Rim Material:Aluminum Alloy Net Weight:15.1 KG Gross Weight:16.0 KG Derailleur:Customized Tyre:Customized Size:Customized Brake:Customized Style:Customized Frame:Customized Color:Customized Folding:Customized OEM:Yes